CN101241214A - Dam safety sensing optic cable - Google Patents
Dam safety sensing optic cable Download PDFInfo
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- CN101241214A CN101241214A CNA2008100323731A CN200810032373A CN101241214A CN 101241214 A CN101241214 A CN 101241214A CN A2008100323731 A CNA2008100323731 A CN A2008100323731A CN 200810032373 A CN200810032373 A CN 200810032373A CN 101241214 A CN101241214 A CN 101241214A
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- dam
- optic cable
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- large dam
- sensing optic
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Abstract
The invention relates to a signal sensing medium, especially relates to a large dam safety sensing optical cable for real time monitoring large dam concrete solidification and large dam leakage status and elongating service life of the invented object. A filler layer, an intensifying sleeve, and a protective sleeve are wrapped on the sensing optical fibre sequentially. Two conducting wires are disposed in the filler layer. The invented safety sensing optical cable can not only real time monitor large dam concrete solidification status during large dam construction course, but also discover large dam leakage, so that flood damage is avoided, national possessions and mass safety are guaranteed, and the service life of the invented object is elongated.
Description
Technical field
The present invention relates to a kind of sensing media, especially relate to a kind of can solidifying with the seepage of dam situation dam concrete rapidly and monitor in real time, and prolong the dam safety sensing optic cable in serviceable life of the present invention.
Background technology
Sensing optic cable can be used for monitoring dam concrete and solidifies and the seepage of dam situation.In the work progress of dam, sensing optic cable is embedded in the dam, utilize concrete when building undesired condensing and the abnormal temperature that produces is monitored the situation of condensing of dam concrete in real time; In the dam construction process and after being completed, for a long time dam is carried out temperature monitoring,,, thereby can monitor whether seepage takes place in the dam so the heat loss is very fast relatively because dam has the place of seepage that current are just arranged.Sensing optic cable is used for monitoring the above-mentioned condition of dam, for the safety that ensures dam very important meaning is arranged.
Prior art is made up of sheath, reinforcing sleeve, packed layer, sensor fibre, its structure is that sensor fibre wraps packed layer, reinforcing sleeve, sheath outward successively, and the manufacturing materials that adopts of packed layer, reinforcing sleeve, sheath is respectively Kevlar (Kevlar), and to spin the model that synthetic fibre yarn, stainless-steel tube, U.S. SpeChem company produce be HF548-45 high flame resistance, low smoke bittern-free flame-proof material.Its principle of work is: come detection of temperature data by the sensor fibre that is arranged in the packed layer, temperature data is transferred to is arranged on the indoor data processing main frame of monitoring then, thereby realize the safety monitoring to the dam scene.It is as follows that the sensing optic cable of prior art is used in the defective and the deficiency that exist in the dam safety monitoring application: 1, there is not heating arrangement, and poor to dam crack seepage resolution characteristic; 2, do not have water blocking layer, the water capacity easily is penetrated into optical cable inside, can cause optical cable to lose efficacy year in and year out; 3, a built-in sensor fibre will be if this root fibercuts can't be carried out the temperature data transmission.
Summary of the invention
Technical matters to be solved by this invention provides a kind of overcome prior art defective and deficiency, can promptly solidify the dam safety sensing optic cable that carries out on-the-spot monitoring in real time and can improve seepage of dam monitoring dynamics and prolong serviceable life of the present invention with the seepage of dam situation to dam concrete.The present invention solves the technical scheme that its technical matters adopts: a kind of dam safety sensing optic cable, it comprises and wraps packed layer, reinforcing sleeve, sheath on the sensor fibre successively, is provided with 2 leads in the packed layer.Technical matters to be solved by this invention also can further be solved by following technical solution: sensor fibre is 2, is provided with reinforcement between 2 leads and/or 2 sensor fibres; Fill water blocking layer between reinforcing sleeve and the sheath; Water blocking layer is that Zhengzhou Brunswick cable material water-proof material company limited produces, model is that ZSD50 meets the waterstop that water can expand rapidly.The diameter of the lead among the present invention is 1～3mm.Reinforcement among the present invention adopts FRP (Fiberglass ReinforcePlastic glass fiber reinforced plastics) material, is used for resisting the pulling force that sensing optic cable is embedded in the dam to be born; Reinforcing sleeve adopts stainless steel material to make, and is used for resisting the pressure that optical cable is embedded in the dam to be born; Sheath adopts polythene material to make, and is used for protecting the present invention the damage that produces in order to avoid be subjected to the erosion of dam concrete.Rapid expansion can take place in the water blocking layer among the present invention when meeting water, invade inside of the present invention to stop steam.The present invention can successively lay in the dam construction process, and monitor concrete adiabatic condensation temperature in the dam construction process by the present invention, guarantee that dam concrete condenses normally, and temperature data is preserved for the dam concrete situation of condensing being done long-term analysis and research use.Sensor fibre among the present invention is the commercially available prod, and sensor fibre has the acrylates coating outward.The present invention adopts 62.5/125 μ m multimode sensor fibre, and bandwidth range is 〉=400MHZ@850nm, 〉=1000MHZ@1300nm, attenuation range is≤3.0dB@850nm ,≤0.8dB@1300nm.The present invention is owing to adopt technique scheme, can in the work progress of dam, monitor the dam concrete situation of condensing, can in time find the seepage of dam again, prevented the generation of floods, ensure national property and the people's life security, and prolonged serviceable life of the present invention.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiments of the invention the present invention is described in further detail:
Fig. 1, Fig. 2, Fig. 3, Fig. 4 are cross-sectional structure synoptic diagram of the present invention.
With reference to Fig. 4.Be provided with sensor fibre 2, lead 3, reinforcement 4 in the packed layer 1 of the present invention, packed layer 1 outer reinforcing sleeve 5, water blocking layer 6, the sheath 7 of wrapping successively.
Embodiment
Embodiment 1: with reference to Fig. 1.Present embodiment adopts 1 sensor fibre, and makes the length of 2 leads in the present invention be enough to form certain (heating) internal resistance when operating voltage of its two ends effect.(can successively) lays the present invention in the dam construction process, and can monitor dam structure inside by the present invention after dam is completed has ne-leakage.At first with an end short circuit of 2 leads, on the other end of 2 leads, act on an operating voltage (20～30V DC voltage) then, and the internal resistance of complying with 2 leads makes 2 leads generate heat, make temperature of the present invention be elevated to uniform temperature simultaneously, cut off the power supply then thermal data of the present invention sent on the terminal surveying instrument that is arranged on the indoor data processing main frame and measure, if seepage place is arranged in the dam, because there have the local heat of water to run off to be fast, so the temperature that on measurement temperature curve of the present invention, just can see seepage part relatively other not the temperature of seepage place obviously descend, thereby realize safety monitoring function, so just can detect dam structure inside at an easy rate whether seepage takes place dam.
Embodiment 2: with reference to Fig. 2.Present embodiment has been set up 1 sensor fibre and reinforcement on the basis of embodiment 1, and reinforcement is arranged on the position of a kind of sensor fibre of embodiment, 2 sensor fibres are arranged on the both sides of reinforcement, when 1 sensor fibre wherein break down or situation about rupturing under still can realize safety monitoring to dam, and can improve compressive strength of the present invention.
Embodiment 3: with reference to Fig. 3.Present embodiment is being filled water blocking layer on the basis of embodiment 1 between reinforcing sleeve and sheath, so can stop moisture attacks in the safety monitoring function that realizes dam, prolonged serviceable life of the present invention, to reach better implementation result of the present invention.
Embodiment 4: with reference to Fig. 4.Present embodiment is being filled water blocking layer on the basis of embodiment 2 between reinforcing sleeve and sheath, so can stop moisture attacks in the safety monitoring function that realizes dam, prolonged serviceable life of the present invention, to reach better implementation result of the present invention.
Claims (4)
1. dam safety sensing optic cable, it comprises and wraps packed layer, reinforcing sleeve, sheath on the sensor fibre successively, it is characterized in that: be provided with 2 leads in the packed layer.
2. a kind of dam safety sensing optic cable according to claim 1 is characterized in that: sensor fibre is 2, is provided with reinforcement between 2 leads and/or 2 sensor fibres.
3. a kind of dam safety sensing optic cable according to claim 1 and 2 is characterized in that: fill water blocking layer between reinforcing sleeve and the sheath.
4. a kind of dam safety sensing optic cable according to claim 3 is characterized in that: water blocking layer is that Zhengzhou Brunswick cable material water-proof material company limited produces, model is the ZSD50 waterstop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100323731A CN101241214A (en) | 2008-01-08 | 2008-01-08 | Dam safety sensing optic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100323731A CN101241214A (en) | 2008-01-08 | 2008-01-08 | Dam safety sensing optic cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101241214A true CN101241214A (en) | 2008-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100323731A Pending CN101241214A (en) | 2008-01-08 | 2008-01-08 | Dam safety sensing optic cable |
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| Country | Link |
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| CN (1) | CN101241214A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389551A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Sealing protection structure inside cable |
| CN105606315A (en) * | 2016-03-14 | 2016-05-25 | 四川大学 | Distributed fiber sensing technical scheme and system for monitoring of concrete panel dam seepage |
| CN105739039A (en) * | 2016-05-10 | 2016-07-06 | 河海大学 | Sensing optical cable for monitoring seepage performance and using method thereof |
| WO2017075949A1 (en) * | 2015-11-05 | 2017-05-11 | 南京华信藤仓光通信有限公司 | Strain-sensing optic cable having water infiltration detecting function |
| CN108755616A (en) * | 2018-08-22 | 2018-11-06 | 江苏省水利勘测设计研究院有限公司 | A kind of embedded protective device of fibre optical sensor |
-
2008
- 2008-01-08 CN CNA2008100323731A patent/CN101241214A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389551A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Sealing protection structure inside cable |
| WO2017075949A1 (en) * | 2015-11-05 | 2017-05-11 | 南京华信藤仓光通信有限公司 | Strain-sensing optic cable having water infiltration detecting function |
| CN105606315A (en) * | 2016-03-14 | 2016-05-25 | 四川大学 | Distributed fiber sensing technical scheme and system for monitoring of concrete panel dam seepage |
| CN105739039A (en) * | 2016-05-10 | 2016-07-06 | 河海大学 | Sensing optical cable for monitoring seepage performance and using method thereof |
| CN105739039B (en) * | 2016-05-10 | 2018-06-19 | 河海大学 | A kind of observed seepage behavior monitoring sensing optic cable and application method |
| CN108755616A (en) * | 2018-08-22 | 2018-11-06 | 江苏省水利勘测设计研究院有限公司 | A kind of embedded protective device of fibre optical sensor |
| CN108755616B (en) * | 2018-08-22 | 2024-02-20 | 江苏省水利勘测设计研究院有限公司 | Optical fiber sensor buries protective device |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080813 |